Watford Valves

[mark]

Not Smallframe related but interesting none the less !!
I get my Amplifier valves from Watford Valves and their news letter had this 1950’s information film , like the current how di they do that series .
Am I that boring? I’m sure some of you engineering minded will like it .

[tzsteve]

All of that work looks mind numbing


i have built a couple of valve preamps over the years
mullard were amongst the best available
now i use Russian ones ( Sovtec )